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* Combines Alignment, AuxInfo, and TB_NOT_REVERSABLE flag into a 

single field (Flags), which is a bitwise OR of items from the TB_*
enum. This makes it easier to add new information in the future.

* Gives every static array an equivalent layout: { RegOp, MemOp, Flags }

* Adds a helper function, AddTableEntry, to avoid duplication of the
insertion code.

* Renames TB_NOT_REVERSABLE to TB_NO_REVERSE.

* Adds TB_NO_FORWARD, which is analogous to TB_NO_REVERSE, except that
it prevents addition of the Reg->Mem entry. (This is going to be used
by Native Client, in the next CL).

Patch by David Meyer

llvm-svn: 139311
This commit is contained in:
Bruno Cardoso Lopes 2011-09-08 18:35:57 +00:00
parent 2d3f70ac1c
commit 23eb5265b4
2 changed files with 652 additions and 642 deletions
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1276
llvm/lib/Target/X86/X86InstrInfo.cpp
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18
llvm/lib/Target/X86/X86InstrInfo.h
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@ -131,14 +131,22 @@ class X86InstrInfo : public X86GenInstrInfo {
/// RegOp2MemOpTable2Addr, RegOp2MemOpTable0, RegOp2MemOpTable1,
/// RegOp2MemOpTable2 - Load / store folding opcode maps.
///
DenseMap<unsigned, std::pair<unsigned,unsigned> > RegOp2MemOpTable2Addr;
DenseMap<unsigned, std::pair<unsigned,unsigned> > RegOp2MemOpTable0;
DenseMap<unsigned, std::pair<unsigned,unsigned> > RegOp2MemOpTable1;
DenseMap<unsigned, std::pair<unsigned,unsigned> > RegOp2MemOpTable2;
typedef DenseMap<unsigned,
std::pair<unsigned, unsigned> > RegOp2MemOpTableType;
RegOp2MemOpTableType RegOp2MemOpTable2Addr;
RegOp2MemOpTableType RegOp2MemOpTable0;
RegOp2MemOpTableType RegOp2MemOpTable1;
RegOp2MemOpTableType RegOp2MemOpTable2;
/// MemOp2RegOpTable - Load / store unfolding opcode map.
///
DenseMap<unsigned, std::pair<unsigned, unsigned> > MemOp2RegOpTable;
typedef DenseMap<unsigned,
std::pair<unsigned, unsigned> > MemOp2RegOpTableType;
MemOp2RegOpTableType MemOp2RegOpTable;
void AddTableEntry(RegOp2MemOpTableType &R2MTable,
MemOp2RegOpTableType &M2RTable,
unsigned RegOp, unsigned MemOp, unsigned Flags);
public:
explicit X86InstrInfo(X86TargetMachine &tm);